chore: setup integration test in ci

- Use Travis Branch Trigger to run integration test.
- Use Travis Pull Request Trigger to run unit test.
- Run both tests in master branch.

.travis.yml

@@ -8,7 +8,7 @@ git:
   depth: 2
   submodules: false
 
-if: 'branch IN (master, develop, staging, trying) OR type != push OR fork = true OR tag =~ ^v'
+if: 'branch IN (master, develop) OR branch =~ /^rc\// OR type != push OR fork = true OR tag IS present'
 
 env:
   global:

devtools/ci/script.sh

@@ -5,24 +5,43 @@ echo "TRAVIS_BRANCH=$TRAVIS_BRANCH"
 
 cargo sweep -s
 
-if [ "$FMT" = true ]; then
-  make fmt
-fi
-if [ "$CHECK" = true ]; then
-  make check
-  make clippy
-fi
-if [ "$TEST" = true ]; then
-  make test
+# Run test only in master branch and pull requests
+RUN_TEST=false
+# Run integration only in master, develop and rc branches
+RUN_INTEGRATION=false
+if [ "$TRAVIS_PULL_REQUEST" != false ]; then
+  RUN_TEST=true
+else
+  RUN_INTEGRATION=true
+  if [ "$TRAVIS_BRANCH" = master ]; then
+    RUN_TEST=true
+  fi
 fi
 
-git diff --exit-code Cargo.lock
+if [ "$RUN_TEST" = true ]; then
+  if [ "$FMT" = true ]; then
+    make fmt
+  fi
+  if [ "$CHECK" = true ]; then
+    make check
+    make clippy
+  fi
+  if [ "$TEST" = true ]; then
+    make test
+  fi
+
+  git diff --exit-code Cargo.lock
+fi
 
-if [ "$TRAVIS_BRANCH" = master -o "$TRAVIS_BRANCH" = staging -o "$TRAVIS_BRANCH" = trying ]; then
-  cargo build
+# We'll create PR for develop and rc branches to trigger the integration test.
+if [ "$RUN_INTEGRATION" = true ]; then
+  echo "Running integration test..."
+  cargo build --verbose
   cd test && cargo run ../target/debug/ckb
 
   # Switch to release mode when the running time is much longer than the build time.
   # cargo build --release
   # cargo run --release -p ckb-test target/release/ckb
+else
+  echo "Skip integration test..."
 fi